A reef dweller is an organism that lives in coral reefs. The most common reef dwellers are the MORAY EEL and the POLYP. MORAY eels are a type of fish with long, slender bodies and sharp teeth. They can be found in tropical and subtropical waters around the world. Polyps are small invertebrates that live in colonies and attach themselves to rocks or other surfaces. They have tentacles that they use to capture food and defend themselves. Both the MORAY EEL and the POLYP are important members of the reef ecosystem.